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L. D. RAILSBACK.

ROTARY DISK PLOW.

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L. D. RMLSBACK. ROTARY DISK PLGW.

No. 510,992. Patented Dee. 19,1893.

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Unirse STATES PATENT limon..

LAFAYETTE D. RAILSBACK, OF INDIANAPOLS, INDIANA.

ROTARY-DISK PLOW.

SPECIFICATION forming part of Letters Patent No. 510,992, dated December 19, 1893. p

Application iiledrOctaber 18, 1893. lSerial No. 488,498. (No model.)

To all whom it may concern.:

Be it known that I, LAFAYETTE D. RAILS- BAOK, a citizen of the United States, residing at Indianapolis, county of Marion, and State of Indiana, have invented certain new and useful Improvements in Rotary-Disk Plows; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like figures refer to like parts.

My invention relates to a construction of rotary disk plows that will render them convenient to operate and more serviceable than those heretofore used. It has for its object the same as that stated 1n my patent on rotary disk plows, No. 505,777, and dated September26, 1893; and consists in several improvements on the plow shown and described in that patent.

The chief feature of my invention consists in mounting small rolling cutters i inmediately in front ot' the cutting edge of each disk. The object of this arrangement is to prevent the tendency of the plow to run into the land, because of the angle at which the rotary disks must be set in order to turn the soil. The cutters separate the fallow to be turned by each disk from the main land, so that all the disk has to do is to turn that fallow, and therefore it will have no great tendency to run into the land. By this arrangement the draft is also greatly reduced and the furrow wheel need not be staggered as the lateral pull on it is net very great.

Another feature of my invention consists in placing under the tongue, in front of the main frame of the plow,a wheel to support the tongue and take the load ed the horses necks when the rolling disks run over astone or other impediment. I have placed a spring between the tongue and supporting wheel in order to allow some freedom of' movement on the part of the tongue, but not much. Another feature of my invention consists 1n making the axle sectional, whereby the furrow wheel can be adjusted laterally and also vertically, independent of the plow disks, in order that they may be set on the same level. Also the plow disks and furrow wheelV can be simultaneously adj usted vertically independent of the land wheel, and the land wheelbe vertically adjusted independent of the rest of the plow.

Another feature of my invention consists in placing a shoulder on the plow beam just behind the bracing heel of the hand lever used to elevate and lower the beam. This shoulder combined with the heel of the hand lever holds the disks downto their work positively, and therefore I am enabled to dispense with the stirrup 27, rod 29, small bent lever 30 and spring 3l found in my former patent above mentioned. f

Another feature of my invention consists in providing a slot in the hand lever in which one end of the link or brace connectingsuch hand lever with the plow beam, is mounted, whereby I am enabled to dispense with the arm 23, shown in my former patent, on which the weight is mounted, and can mount the Weight directly on the upper end of the hand lever. The plowman when he goes to raise the plow will push the lever forward, and by reason of the slot before mentioned, the lever does not begin to draw up the plow by means of the link until the weight has passed so far to the front of the fulcrum of the hand lever, that it materially assists the plowman in raising his plow.

Figurel is asideelevation of my plow while at work. Fig. 2 is a plan View of the same, the seat being shown by dotted lines. Fig. 5 is a view of the axle and wheels, the former being shown partly in section. Fig. 4; is an end view partly in section of the main axle next to the furrow wheel, the furrow wheel n being removed. Fig..5 is a bottom View cfa rolling cutter and its attachment to the beam.v Fig. 6 is a section of the main axle, on the line rc-m, Fig. 3. Fig. 7 is a modified form of the portion of the main axle next the land wheel.

Indetail l is atongue,and2 the plow beam pivoted to the rear end of the tongue by the bolt 3. The beam is divided into three arms on which three rotary plow disksli are mounted. These plow disks are mounted in the boxing 5 in the same manner as described in my former patent. It will be observed that the axle of the plow disks extends from the convex and not the concave side of the disk, for if it extended from the concave side it IOO would be liable to choke the Vplow byV catching weeds. The boxings 5, or the arms of the beam in which the disks Vare mounted, arey held exactly in place by the'guard 6, which` is attached to each boxing and curves over each disk as shown.i'l`his guai-dis preferably made ofY metal in order to strengthen the beam, weightV down they plow disks and protect the driver in case heshould Vaccidentally fall back onto the disks.

I providerollingfallow.cutters 7 secured to the under side of the beam or axle, as the case may be, by an ordinary swivel 8. This rolling fallow cutter should be solocated that it will run just in front of the forward edge of the rotary plow disk, and made of such size and securedV in a swivelof such size, that the rolling cutter will cut the fallow Y as deep as the lower edges of the disks will run. The purpose of the rolling cutter is to separate the fallow from the land, and tore- Ylieve the plow disks otthat work, in order that the plow disks may not cause the plowV to run into the land or to have such atendency to run into the land, as tomateriaily increase the draft. These rolling cutters reduce the draft and enable the furrow wheel to be mounted straight instead of staggered-,

on the swivel astachrnent a lug 9 adapted toV engage a pinlO secured to the under side of Y the beam, as seen in Fig. 5, the twobeing Vso arranged relatively to each other that they will stop the rolling cutter and prevent it Y from swinging landward, under the circumstances just mentioned.

V.When the beam 2 is locked down to its Work, being connected to the butt end of the tongue, if the plow disks run over a stone or other impediment, they will cause the front end of the tongue to pull down with great force on the horses necks. In order to remedy this difficulty I place a caster wheel 11, with a tire about six inches wide, under the tongue in front of the main axle. I pass the bolt 12, on which the caster wheel is mounted, through the tongue, as shown in Fig. 1, and place between the caster wheel and the tongue a spring 13 which coils spirally around the bolt 12 and gives the tongue some freedom of movement vertically. In order to have sufficient play for the tongue, I bore out a hole in the under part of the tongue part of the way, and extend the spring 13 up into the hole, as seen in dotted lines in Fig. 1.

I use a land wheel 14 and a furrow wheel 15, as shown in Fig. 1. The latter I do not mount in a staggered position because the sidewise pull of the plow, when provided with rolling fallow cutters, is not sucient to render it necessary to make the furrow wheel staggered, as in my former patent. There is, however, a little lateral pull and for that reason I make the edge of the wheel somewhat angular, so that it will not readily slip laterthe various parts ofmy plow. Its central part'consistsof a frame 16V so constructed as to have two Vvertical slots or openngs,as seen Y inV Fig. 3, through one of which the tongue 1 extends, and in the'other theinnerend of the section 17 of the axle is secured. In these openingsV inthe frame, theftongue y,as well as the sectionV 17 yof the axle are verticallyadj usted by means of the screw bolts 18. These screw bol ts extendentirelythrough the frame 16 vertically, and have onrthe upper end a hand wheel 19 or other means ot' operating them, and on the lower end caps' 20 or other means of preventing their upward movement. Hence these bolts 18 are-always vertically stationary, and their passage through the lower part of the frame 16 renders themV strong and Vbolts Vextend are likewise threaded, so that when the bolts are turned the tongue'or sec- Y tion 17, as the case may be, is lowered, or the frame 16y elevated. The section 17 of the axle on which the land wheel is mounted, is secured to the frame 16 by having a head 21 on the inner end fitting in the vertical slot inthe frame 16. j main part ofthe section 17 by a neck that extends through the'vertical slot oropening in the end of the frame 16, as'shown in Fig. 6. Since the function of the two bolts 18 is evidently the same, viz., to adjust the plow disks and the furrow wheel on the one hand, in re'- lation tothe land wheel on theother, and since theconstruction just described and shown in Figs. 1 and 3 is adopted solely for the purpose of making this vertical adjustment twice as great by using two bolts instead of one, it

is clear that by lengtheningthe frame 16 ver.

ticallyand thus lengthening the slot, through which the tongue extends, and the bolt 18, the desired vertical adjustment could be procured by one bolt instead of two, and in such case the frame 16 and the section 17 of the axle would be integral and formed in one piece, thus avoiding the use of a screw bolt and the construction ot' the frame 16 that is next to the land Wheel, rendering the axle somewhat stronger andsimplerthan in the form shown in Fig. 3, but probably would not be as desirable as that form where the plow is to be used for deep plowing. This modification, which is found in Fig. 7, therefore does not alter the method of adjustment, but merely `the limit ot adjustment, as in the form shown in Fig. 3 the operation of either screw bolt will produce the same result. The stub axle 23 is adjustably mounted in a slot at the outer end of the section 17 of the main axle in the same manner as shown in my former patent.

24 is another section of the main axle and is rigidly secured to one side of the tongue, as shown in Fig. 3. In its outer end is carried the box 25, as shown in Fig. 4, and the This head Vis connected with theV IOO lIO

two are lheld together by the screw or bolt 26, which is laterally movablein the slot at?? in the top of the outer end ot' "the section 2i l after the proper depth of furrow has been reached for the furrow wheel to run'in. Previous to that, if desired, the furrow wheel can be vertically adjusted independent of the plow disks. vIn this respect the device herein i shown is a material improvement over the form shown in my prior patent, where the adjnstment of the plow disks is independent of the furrow wheel in all cases. l

I hold down myplow beam to its work by the hand lever 3l, as in my former patent. This hand lever is pivoted at 32 to the vertical arms 33 which are rigidly secured to the butt end of the tongue. The lower end of thishand lever is provided with a heel 34:, sub# Stantially like that shown in my former patent, excepting that its rear lower corner Sois rounded and adapted to lsnugl y engage a lug 36 rigidly secured on top of the beam 2, as seen in Fig. l. The faces of the lug 36 and the corner-35 of the hand lever should snugly engage each other, in such manner that any upward movement of the plow beam would cause the lug 3b' to push toward a point below the pivot 32, so that no matter what degree of pressure might be brought against the corner 35 of the heel ofthe lever, the beam could not be lifted. .By using this construction I am enabled to dispense with the stirrup, spring and connecting rod shown in my former pat- `1`ent, on the hand lever.

37 are links or braces, preferably two in a machine like the one herein shown, pivoted at their lower ends to the beam and at their upper ends to a bolt 38, that works in a slot 39, in the hand lever 3l.

40 is a weight adjustably mounted on the cross bar 41, at the top of the hand lever 31.

l The purpose of the weight 40 while in the position shown in Fig. 1, is to assist in holding the hand lever 3l in a vertical position,

but its main function is to assist the plowman in elevating the plow disks, which he does by pushing the hand lever 3l forward. As he does this the corner 35 of the heel of the hand lever will disengage the lug 3G on the beam and the weight- 40 will be carried to the front of the pivotal point 32 sufficiently far before the bolt 38 will reach the rear end of the slot 39 and thus begin to pull and lift up the beam 2, so thatthe weight will be a great slot which renders it laterally movable on the cross bar 4l 'and is held in place by the set screw 42.` By using a hand lever provided with a slot Silas described above, I am enabled to dispense with the arm on which the weight is' h ung in my former patent. course the slot in the hand lever must be of such length as to enable the heel to escape from the lug on the beam before the link begins to elevate the beam.

43 is a seat. v

ifi is a double tree, and 45 is a foot rest.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. In a rotary disk plow wherein the plow beam is connected to the tongue, an axle consisting of a section on which the furrow wheel is mounted rigidly secured to the tongue, and

uae

a section on which the land wheel is mounted l so combined with the tongue that such section of the axle and the tongue will be vertically movable independent of each other.

2. In a rotary disk plow wherein the plow beam is connected to the tongue, an axle consisting of one section on which the furrow wheel is mounted rigidly secured to the tongue, and another section on which the land wheel is mounted provided with a central vertical opening through which the tongue may extend, and a bolt so mounted in the axle as to be vertically immovable and extending through the tongue, the central part of such bolt and the hole in the tongue through which the bolt passes being threaded.

3. In a rotary disk plow wherein the plow beam is secured to the tongue, an axle consisting of one section on which the furrow wheel is mounted rigidly secured to the tongue, a central section provided with a ceutral vertical slot through which the tongue extends, a section on which the land wheel is mounted secured to and vertically movable in such central section of the axle, and bolts so mounted in such central section as to be vertically immovable, one bolt extending through the tongue andthe other through the inner end ofthe section of the axle on which the land wheel is mounted, the middle part of each bolt and the hole through which it passes being threaded.

4. In a rotary disk plow whereiuthe tongue and beam are connected, an axle consisting of one part on which the land wheel is mounted so combined with the tongue as to be verti- IOO IZO

cally adjustable, and another part of such axle 4 rigidly secured to the tongue and provided with an opening in its end, and a slot in its top, a box fitting in such end opening and secured to such axle by a set screw operating in such slot and provided with vertical slots in with a plurality of arms on which are mounted plow disks, and a guard formed solidly of a plurality of curves extending over the disks, the depending portion of such guard between the disks rigidly secured to the arms of the beam on which the disks are mounted, substantially as shown and described.

6. In a rotary disk plow, a beam carrying the disks pivoted to the frame, a hand lever mounted on the frame, provided with a heel at its lower end, and a lug on the beam adapted to engage the heel of the band lever and lock down the beam, substantially as shown and described.

7. In a rotary disk plow, a beam carrying the disks pivoted to the frame of the plow, a hand lever mounted on the framework and provided with a heel at its lower end and a slot above its pivotal point, a lug on the beam adapted to engage the heel and lock down the plow beam, and a link pivoted to the beam and engaging the slot in the hand lever, sub stantially as shown and described.

8. In a rotary disk plow, a beam carrying the disks pivoted to the frame of the plow, a

hand lever mounted on the framework and provided with a heel at its lower end, a'lug on the beam adapted to engage the heel of the hand lever and lock down thebeam, and a weight mounted on the upper end of such hand lever.

9. In a rotary disk plow, a beam carrying the disks pivoted to the framework, a hand lever mounted on the framework and provided with a heel at its lower end and a slot LAFAYETTE D. RA ILSBACK.

Witnesses:

V. H. LocKWooD, N. D. TILFORD. 

